<slow clap!>Don't hate me: sounds like you could use a router and a two flute spiral bit to do what you are aiming to do. Cheaper and likely cleaner than the plasma. Even if you take a couple of passes to do it, you might like the results better and easier cleanup. IMHO.
BTW, do you mind saying what you paid for the plasma cutter?
Ayup! Had a job come in to one of our shops. Needed to make 48 essentially matching panels, of 1/8 aluminum, to fit the back cockpit walls of Bell 412 helicopters.
Talked the boss into authorizing the purchase of a new Dewalt Router and some pilot bearing bits. We banged out a plywood template while they were out getting the tools and tooling
Took us one day to make 48 panels, that had came in with an 8 man-hours per piece time estimate.
Back of the shop looked like a silver snowstorm but the work was done and cleaned, way faster than anyone expected.